KEY FEATURES
• Loud alarm, 85 dB (A) typical, (> 90 dB (C) peak) • Vibrating alarm • Highly visible backlit display • Optional telemetry module • Factory upgradeable firmware • Simple 2-buttons navigation • Extended dose rate alarms • Dual ultrabright LED alarm • Superior X-ray and gamma energy response • Meets or exceeds applicable IEC and ANSI standards
PHYSICAL CHARACTERISTICS • Compliant with IEC 61526Ed. 3, ANSI 42.20(*)/ (*) isotropy 241Am and 137Cs with ± 75° angle • Measurement and display: - X and gamma energy range: 15 keV to 7 MeV - Energy response better than ± 20% (typically ± 10%) from 16 keV to 7 MeV • Accuracy Hp(10): ≤ ± 10%* (137Cs, ~ 24 mSv/h); ≤ ± 15%*, (241Am, ~ 23 mSv/h); ≤ ± 19%** X-ray 16keV (*including ± 5% extended uncertainty k=2) ; (** including ± 9% extended uncertainty k=2) • Display units: mSv, μSv, or mrem • Display dose: 1 μSv to 10 Sv (0.1 mrem to 1000 rem) • Display rate: 10 μSv/h to 10 Sv/h (1 mrem/h to 1000 rem/h) or 1 μSv/h to 10Sv/h
(0.1 mrem/h to 1000 rem/h) extended option. • Measurement range: 1 μSv to 10 Sv (0.1 mrem to 1000 rem) 0.1 μSv/h to 20 Sv/h
(0.01 mrem/h to 2000 rem/h), Saturation indication above 10 Sv (1000 rem) or 10 Sv/h
(1000 rem/h) • Dose Rate Linearity: < ± 20% up to 10 Sv/h (1000 rem/h) (Co and X H30 20 keV) < ± 20% up to 6 Sv/h (600 rem/h) (Pulsed X-rays 20 ms width, 1, 10, & 20 pps)
ELECTRICAL CHARACTERISTICS
• Standard AAA (LR03) 1.5 V Alkaline battery • 9 calendar month battery life (typical, 8 h per day, 5 days per week in run mode, without
excessive alarms)* • 2500 h battery life in continuous run, without excessive alarm* 0.2% of the time in alarm
MECHANICAL CHARACTERISTICS• Rugged, high impact polycarbonate-ABS case • Dimensions: 86 x 56 x 21 mm (3.4 x 2.2 x 0.8 in) without clip • Weight with alkaline battery and clip: < 88 g (3.1 oz) • Worn by a replaceable clips (2 different style back clips or one a frontfacing clip for DMC worn inside the pocket)
ENVIRONMENTAL CHARACTERISTICS
• Temperature range: -10°C to 50°C (14°F to 122°F): deviation in response less than ± 5% • Relative humidity: < 90% at 42°C (108°F) • Storage: -20°C to 71°C (-4°F to 160°F) • Shock, vibration and drop resistant (1.5 meter on concrete) • Waterproof IP67: 1m (39 in) during 1 hour • EMC: complies and exceeds standards by a large margin
( compliant, certificate number: 153720) - MIL STD 461F RS103 (pulsed electric field): exceeds 200 V/m from 30 kHz to 5 GHz - MIL STD 461F RS101 (magnetic field 30 Hz - 100 kHz) • Factory calibration approved under ISO/IEC 17025, COFRAC accreditation Nber 2-1663
Histogram Features
• Dose increments with a 1 μSv (0.1 mrem) resolution saved on non volatile memory
(EEPROM) in configurable steps (10 s, 60 s, 10 min, 1hour, 24 hours) • Dose rate saved at each dose increment when using enhanced communication protocol • Event log (alarms, faults, changes) saved during the selected time periods • Stores data for several consecutive workers entries and exits (more than 1000 steps)
Display Features • Large LCD display with high quality white backlighting • 8 alpha-numeric digit display for full name display (scrolling) and fix dose/rate display
format • 3 top LEDs for Alarming (Red), gamma counting (Green), and Hp(0.07) or Neutron counting
(Blue) • 2 push buttons for an easy customized data and parameters display
Alarm Features and Communication • Alarming speaker with level of 85 dB (A) typical (> 90 dB (C) peak) at 30cm (11.8 in),
frequency < 4800 Hz • Vibrating alarm • High efficiency red flash LED on front • 3 Top LEDs and display indicators • Dose/rate alarms, adjustable over the display range • Dose/rate warnings, adjustable over the display range and acknowledgeable • Remaining time before alarm and run time alarms • Hands-free communication, frequency: 125 kHz • Backward compatibility with existing readers (LDM 2000, LDM 220/210) • Range of communication with LDM 220: 10 cm (3.9 in) • Enhanced protocol to support additional features with the new readers (LDM 320D, LDM 320W, LDM 2000 (*)) * requires reader firmware upgrade
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